Note: The Injustice League which appeared in Justice League of America Vol. 2 was modeled after the
villain team which appeared in the animated series Justice League Unlimited.

Creator

Injustice League I

D. Curtis Johnson & Mike Collins

Injustice League II

Dwayne McDuffie

Origin

Bored with his interplanetary dominion, the alien
Agamemno
sought new conquests on Earth. Recruiting
Lex Luthor
and other criminals on Earth, Agamemno had the villains' minds switched with members of the
Justice League.

With the use of the
HERO Dial,
the mind-switched heroes in villain bodies obtained new powers and defeated the Injustice League.

The memory of the first Injustice League whipped from the minds of the villains, it would be years later that Lex Luthor would reform
the group as part of a protection racket creating an Injustice League.